I have a gf of ~3.5 years. We're pretty serious i guess. She just went to college last fall, about 2 hours away. i see her every weekend almost. We had a talk about things before and even during her start there. I told her that i'd really want her to stay away from sororities. she agreed and promised she wouldnt. just yesterday, she told me she went to a sorority meeting of some sort, and now is telling me she would like to join. i told her she promised me already and said i am really against it. now she's really upset and i dont know. would like to hear some opinions.